If Phong had enough money, he could travel abroad.
If I drived too close to the animals on safari, the would get scared.
If Tom had a passport, he could travel abroad.
If there were not so many tourists visiting the national parks, the environment there would not be badly damaged.
If tourists did not throw litter in the river, the water would not be polluted.
If I could swim, I would be going scuba-diving with you.
If I had a holiday, I would go on an eco-tour to PQ NP.
If these students worked hard, they could pass the exam.
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